using System;
using System.Collections;
using UnityEngine;
using UnityEngine.UI;
using QFramework;
using UnityEngine.SceneManagement;

namespace QFramework
{
	public class LoadProgressPanelData : UIPanelData
	{
	}
	public partial class LoadProgressPanel : UIPanel
	{
		private AsyncOperation m_AsyncOperation;

		private float m_CurrentProgress, m_TargetProgress;
		
		protected override void ProcessMsg(int eventId, QMsg msg)
		{
			throw new System.NotImplementedException();
		}
		
		protected override void OnInit(IUIData uiData = null)
		{
			mData = uiData as LoadProgressPanelData ?? new LoadProgressPanelData();
			// please add init code here
		}

		#region 内置函数

		protected override void OnOpen(IUIData uiData = null)
		{
		}
		
		protected override void OnShow()
		{
		}
		
		protected override void OnHide()
		{
		}
		
		protected override void OnClose()
		{
		}

		#endregion

		public void Init(string _sceneName)
		{
			Title.text = "加载中";
			LoadSlider.value = 0;
			m_CurrentProgress = m_TargetProgress = 0;
			
			StartCoroutine(LoadScene(_sceneName));
		}

		private IEnumerator LoadScene(string _sceneName)
		{
			m_AsyncOperation = SceneManager.LoadSceneAsync(_sceneName);

			m_AsyncOperation.allowSceneActivation = false;

			while (m_AsyncOperation.progress < 0.9f)
			{
				m_TargetProgress = (int)m_AsyncOperation.progress * 100;

				yield return LoadProgress();
			}

			m_TargetProgress = 100;

			yield return LoadProgress();

			Title.text = "加载完成";

			m_AsyncOperation.allowSceneActivation = true;
		}

		private IEnumerator LoadProgress()
		{
			while (m_CurrentProgress < m_TargetProgress)
			{
				++m_CurrentProgress;
				LoadSlider.value = m_CurrentProgress / 100;
				yield return new WaitForEndOfFrame();
			}
		}
	}
}